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US4083097A - Method of making encapsulated solar cell modules - Google Patents

Method of making encapsulated solar cell modules Download PDF

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Publication number
US4083097A
US4083097A US05/746,269 US74626976A US4083097A US 4083097 A US4083097 A US 4083097A US 74626976 A US74626976 A US 74626976A US 4083097 A US4083097 A US 4083097A
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United States
Prior art keywords
solar cells
cells
depressions
solar cell
contacts
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Expired - Lifetime
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US05/746,269
Inventor
Evelyn Anagnostou
Americo F. Forestieri
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National Aeronautics and Space Administration NASA
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National Aeronautics and Space Administration NASA
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Priority to US05/746,269 priority Critical patent/US4083097A/en
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/20—Electrodes
    • H10F77/206—Electrodes for devices having potential barriers
    • H10F77/211—Electrodes for devices having potential barriers for photovoltaic cells
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
    • H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
    • H10F19/904—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells characterised by the shapes of the structures
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
    • H10F19/90—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers
    • H10F19/902—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells
    • H10F19/906—Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers for series or parallel connection of photovoltaic cells characterised by the materials of the structures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49155—Manufacturing circuit on or in base
    • Y10T29/49163—Manufacturing circuit on or in base with sintering of base

Definitions

  • This invention is directed to an improved low cost solar cell module.
  • the invention is particularly concerned with making an encapsulated solar cell module having improved electrical contacts.
  • U.S. Pat. No. 3,025,330 to Ralph shows a plurality of solar cells embedded in a non-conductive panel.
  • the cells are connected together by two flexible metal films separated by a flexible insulating layer.
  • the electrical connections and the encapsulation are not accomplished in a single step.
  • U.S. Pat. No. 3,268,366 to Guyot teaches the mounting of cells in a grid which enables connections to be made by any known means including printed circuitry. After the connections are made, a window is mounted over each cell. The finished array has three surfaces including a front window, grid and back metal surface.
  • U.S. Pat. No. 2,962,539 to Daniels discloses the mounting of solar cells in depressions on a flexible sheet which serves as a mounting platform.
  • Printed circuitry may be used for the connections.
  • Another object of the invention is to provide an improved process for making an encapsulated solar cell module which is less costly and make electrical contact during encapsulation.
  • Still another object of the invention is to provide an improved solar cell module in which solar cells of various configurations can be used with only slight modification.
  • a further object of the invention is to provide an improved solar cell module in which the embossing depth may be modified so that a variety of cells of various thicknesses can be handled or used.
  • An additional object of the invention is to provide an improved process for encapsulating cells into modules with less handling so that the process is suitable for automation.
  • the problems of the prior art have been solved by utilizing the method of the present invention in which solar cells are encapsulated in a plastic material.
  • the encapsulating material is embossed to enable the cells to be readily positioned for final encapsulation.
  • the electrical connections to the solar cells are made at the same time the cells are encapsulated.
  • FIG. 1 is a perspective view with parts broken away of a solar cell module constructed in accordance with the invention
  • FIG. 2 is a vertical section view taken along the line 2--2 in FIG. 1;
  • FIG. 3 is a plan view of a back plastic sheet hving printed circuitry thereon.
  • FIG. 4 is a vertical section view similar to FIG. 2 showing an alternate embodiment of the invention.
  • FIG. 1 a sheet 10 of transparent plastic material which is utilized as a cover.
  • a fluorinated ethylene propylene copolymer film described in U.S. Pat. No. 2,946,763 has been suitable for this purpose.
  • This film is known commercially as Teflon FEP, and it is an interpolymer of tetrafluoroetylene and hexafluoropropylene. It is further contemplated that other clear film may be used.
  • a flat sheet of this fluorinated ethylene propylene copolymer is heated and pressure molded to form an embossed surface having a plurality of depressions 12 arranged in rows.
  • Each depression 12 has the same configuration as a solar cell, and each cover sheet 10 has as many depressions in an array of adjacent rows as are required for the particular application.
  • each depression is sufficient to position the solar cell.
  • the depth of the depression will depend on the material used in the cover sheet 10. More particularly, the amount of material flow during lamination or fabrication is a determining factor in designing the depth of the depressions 12.
  • each depression contains one solar cell having its first surface 16 in contact with the sheet 10.
  • the front surface 16 of the solar cell 14 which is to face the light source contacts the bottom of the depression 12.
  • Solar cells 14 with positive and negative contacts on the back surface 18 are preferred. These contacts 20 and 22 are shown in FIGS. 1 and 2. N on P cells are preferred for space applications. With this type of cell the contact 20 is positive and the contact 22 is negative. With P on N cells the contacts 20 and 22 are negative and positive respectively.
  • a second sheet of fluorinated ethylene propylene copolymer 24 shown best in FIG. 3 has the required interconnecting circuitry metalization 26 on it.
  • the sheet 16 is likewise an interpolymer of tetrafluoroethylene and hexafluoroethylene, as described in U.S. Pat. No. 2,946,763. It is also contemplated that other materials may be used.
  • Metal films 26 forming the circuitry can be much thinner than contacts now in use.
  • the conventional contacts presently used are about 1 to 2 mils thick.
  • the printed circuit contacts of the present invention are less than about 1/2 mil. These films are so positioned on the sheet 24 that each electrically connects the contacts 20 on all the cells 14 in one row to the contacts 22 on the cells in an adjacent row.
  • the plastic sheet 24 is placed over the solar cells 14 in the depressions 12 in a sheet 10 as shown in FIG. 1.
  • the assembly is then laminated to insure a good FEP bond. During this step the electrical connections are made by thermal compression bonding.
  • FIG. 4 there is shown an embodiment utilizing solar cells 34 having conventional front-back contacts.
  • a cover sheet 30 of Teflon FEP or the like is embossed to form depression 32 in the same manner as used to form the depressions 12 in the cover sheet 10.
  • the interconnecting circuitry metalization is on both the cover sheet 30 as well as a backing sheet 36.
  • a metal contact 38 is formed on each depression 32 in the cover sheet 30 before the solar cell 34 is placed therein.
  • a metal film 40 on the backing sheet 36 connects the contacts 38 in each row with the back surface of the solar cells in adjacent rows. The electrical connections are made by sintering upon assembly.

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  • Photovoltaic Devices (AREA)

Abstract

Electrical connections to solar cells in a module are made at the same time the cells are encapsulated for protection. The encapsulating material is embossed to facilitate the positioning of the cells during assembly.

Description

STATEMENT OF GOVERNMENT OWNERSHIP
The invention described herein was made by employees of the United States Government and may be manufactured or used by or for the Government without the payment of any royalties thereon or therefor.
BACKGROUND OF THE INVENTION
This invention is directed to an improved low cost solar cell module. The invention is particularly concerned with making an encapsulated solar cell module having improved electrical contacts.
The electrical contacts to solar cells in modules must be sturdy to withstand handling. These contacts are presently made individually and in a separate operation. This contacting process is tedious and time-consuming. Such a process is also costly because it requires much handling of the cells and contacts. Another disadvantage is the contact must be thicker than necessary which is wasteful of the material.
U.S. Pat. No. 2,919,298 to Regnier et al teaches the mounting of solar cells in parabolic depressions of metallic sheet which is used as a reflector. The cells are then covered with a thermoplastic sheet containing conductive strips therein to make the necessary connections.
U.S. Pat. No. 3,025,330 to Ralph shows a plurality of solar cells embedded in a non-conductive panel. The cells are connected together by two flexible metal films separated by a flexible insulating layer. The electrical connections and the encapsulation are not accomplished in a single step.
U.S. Pat. No. 3,268,366 to Guyot teaches the mounting of cells in a grid which enables connections to be made by any known means including printed circuitry. After the connections are made, a window is mounted over each cell. The finished array has three surfaces including a front window, grid and back metal surface.
U.S. Pat. No. 2,962,539 to Daniels discloses the mounting of solar cells in depressions on a flexible sheet which serves as a mounting platform. Printed circuitry may be used for the connections.
OBJECTS OF THE INVENTION
It is, therefore, an object of the present invention to provide an encapsulated solar cell module that has improved electrical contacts.
Another object of the invention is to provide an improved process for making an encapsulated solar cell module which is less costly and make electrical contact during encapsulation.
Still another object of the invention is to provide an improved solar cell module in which solar cells of various configurations can be used with only slight modification.
A further object of the invention is to provide an improved solar cell module in which the embossing depth may be modified so that a variety of cells of various thicknesses can be handled or used.
An additional object of the invention is to provide an improved process for encapsulating cells into modules with less handling so that the process is suitable for automation.
These and other objects of the invention will be apparent from the specification which follows and from the drawing wherein like numerals are used throughout to identify like parts.
SUMMARY OF THE INVENTION
The problems of the prior art have been solved by utilizing the method of the present invention in which solar cells are encapsulated in a plastic material. The encapsulating material is embossed to enable the cells to be readily positioned for final encapsulation. The electrical connections to the solar cells are made at the same time the cells are encapsulated.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view with parts broken away of a solar cell module constructed in accordance with the invention;
FIG. 2 is a vertical section view taken along the line 2--2 in FIG. 1;
FIG. 3 is a plan view of a back plastic sheet hving printed circuitry thereon, and
FIG. 4 is a vertical section view similar to FIG. 2 showing an alternate embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawing there is shown in FIG. 1 a sheet 10 of transparent plastic material which is utilized as a cover. A fluorinated ethylene propylene copolymer film described in U.S. Pat. No. 2,946,763 has been suitable for this purpose. This film is known commercially as Teflon FEP, and it is an interpolymer of tetrafluoroetylene and hexafluoropropylene. It is further contemplated that other clear film may be used.
According to the present invention, a flat sheet of this fluorinated ethylene propylene copolymer is heated and pressure molded to form an embossed surface having a plurality of depressions 12 arranged in rows. Each depression 12 has the same configuration as a solar cell, and each cover sheet 10 has as many depressions in an array of adjacent rows as are required for the particular application.
The depth of each depression is sufficient to position the solar cell. The depth of the depression will depend on the material used in the cover sheet 10. More particularly, the amount of material flow during lamination or fabrication is a determining factor in designing the depth of the depressions 12.
Referring to FIGS. 1 and 2, a plurality of solar cells 14 are placed in the depressions 12. Each depression contains one solar cell having its first surface 16 in contact with the sheet 10. Thus, the front surface 16 of the solar cell 14 which is to face the light source contacts the bottom of the depression 12.
Solar cells 14 with positive and negative contacts on the back surface 18 are preferred. These contacts 20 and 22 are shown in FIGS. 1 and 2. N on P cells are preferred for space applications. With this type of cell the contact 20 is positive and the contact 22 is negative. With P on N cells the contacts 20 and 22 are negative and positive respectively.
A second sheet of fluorinated ethylene propylene copolymer 24 shown best in FIG. 3 has the required interconnecting circuitry metalization 26 on it. The sheet 16 is likewise an interpolymer of tetrafluoroethylene and hexafluoroethylene, as described in U.S. Pat. No. 2,946,763. It is also contemplated that other materials may be used.
Metal films 26 forming the circuitry can be much thinner than contacts now in use. By way of example, the conventional contacts presently used are about 1 to 2 mils thick. In contrast, the printed circuit contacts of the present invention are less than about 1/2 mil. These films are so positioned on the sheet 24 that each electrically connects the contacts 20 on all the cells 14 in one row to the contacts 22 on the cells in an adjacent row.
The plastic sheet 24 is placed over the solar cells 14 in the depressions 12 in a sheet 10 as shown in FIG. 1. The assembly is then laminated to insure a good FEP bond. During this step the electrical connections are made by thermal compression bonding.
DESCRIPTION OF AN ALTERNATE EMBODIMENT
Referring now to FIG. 4 there is shown an embodiment utilizing solar cells 34 having conventional front-back contacts. A cover sheet 30 of Teflon FEP or the like is embossed to form depression 32 in the same manner as used to form the depressions 12 in the cover sheet 10.
In the embodiment of FIG. 4 the interconnecting circuitry metalization is on both the cover sheet 30 as well as a backing sheet 36. A metal contact 38 is formed on each depression 32 in the cover sheet 30 before the solar cell 34 is placed therein. A metal film 40 on the backing sheet 36 connects the contacts 38 in each row with the back surface of the solar cells in adjacent rows. The electrical connections are made by sintering upon assembly.
While a preferred example of the invention has been shown and described it will be appreciated that various modifications may be made to the invention without departing from the spirit of the invention or the scope of the subjoined claims. By way of example, the electrical connections may be made using printed circuits in both the cells and the back cover.

Claims (6)

What is claimed is:
1. A method of making a module of solar cells having a transparent cover comprising the steps of
forming a plurality of depressions in said transparent cover,
placing a solar cell in each of said depressions so that the front surfaces of the solar cells which are to face a light source contact the bottoms of said depressions,
positioning a back cover over said solar cells in contact with the back surfaces thereof opposite said front surfaces, and
electrically connecting said solar cells while securing said transparent cover to said back cover.
2. A method of making a module of solar cells as claimed in claim 1 wherein the transparent cover is embossed to form a plurality of depressions in an array of rows.
3. A method of making a module of solar cells as claimed in claim 2 wherein each solar cell has both positive and negative electrical contacts on said back surface thereof opposite said front surface including the steps of
forming a plurality of metal films on said back cover prior to positioning the same over said solar cells, and
positioning said back cover over said solar cells so that said metal films electrically connect the contacts on all the cells in one row to the contacts on the cells in an adjacent row.
4. A method of making a module of solar cells as claimed in claim 3 including the steps of
laminating said transparent cover to said back cover while simultaneously forming electrical connections between adjacent solar cells by compression bonding.
5. A method of making a module of solar cells wherein each solar cell has one contact on the front surface thereof and another contact on the back surface thereof comprising the steps of
forming a plurality of depressions in a transparent cover,
forming a first metal film in each depression,
placing a solar cell in each of said depressions so that the front surface of the solar cell which is to receive light faces the bottom of said depression and contacts said first metal film,
forming a plurality of second metal films on said back cover, and
positioning said back cover over said solar cells so that said second metal films electrically connect the first metal films on all the depressions in one row to the back surface contacts on all the cells in an adjacent row.
6. A method of making a module of solar cells as claimed in claim 5 including the steps of
laminating said transparent cover to said back cover while simultaneously forming electrical connections between adjacent solar cells by sintering.
US05/746,269 1976-11-30 1976-11-30 Method of making encapsulated solar cell modules Expired - Lifetime US4083097A (en)

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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173820A (en) * 1977-06-24 1979-11-13 Nasa Method for forming a solar array strip
EP0018924A2 (en) * 1979-05-08 1980-11-12 Saint Gobain Vitrage International Method of manufacturing solar-cell panels and panels obtained by this method
US4234351A (en) * 1978-07-14 1980-11-18 The Boeing Company Process for fabricating glass-encapsulated solar cell arrays and the product produced thereby
US4241493A (en) * 1978-12-22 1980-12-30 Andrulitis William B Method of fabricating solar cell modules
US4283590A (en) * 1977-07-21 1981-08-11 Werner H. Bloss Method for production of solar cells and solar cells produced thereby
FR2479570A2 (en) * 1980-03-25 1981-10-02 Saint Gobain Encapsulating solar battery of photocells - by coating battery in resin powder placing between sheets and sintering the resin
FR2491680A1 (en) * 1980-10-06 1982-04-09 Exxon Research Engineering Co Prodn. of solar cell array - in which a transparent encapsulant is injected into a casing with transparent top
US4334354A (en) * 1977-07-12 1982-06-15 Trw Inc. Method of fabricating a solar array
EP0440869A1 (en) * 1990-02-09 1991-08-14 Bio-Photonics, Inc. Photovoltaic element able to convert solar radiation into electric current and photoelectric battery
US5167724A (en) * 1991-05-16 1992-12-01 The United States Of America As Represented By The United States Department Of Energy Planar photovoltaic solar concentrator module
US5466302A (en) * 1994-05-09 1995-11-14 Regents Of The University Of California Solar cell array interconnects
US5936380A (en) * 1997-09-12 1999-08-10 Micron Electronics, Inc. Alternative power for a portable computer via solar cells
US6300944B1 (en) * 1997-09-12 2001-10-09 Micron Technology, Inc. Alternative power for a portable computer via solar cells
US6313396B1 (en) 2000-05-22 2001-11-06 The Boeing Company Lightweight solar module and method of fabrication
US6340403B1 (en) * 1994-04-20 2002-01-22 The Regents Of The University Of California Solar cell module lamination process
US6420643B2 (en) * 1998-07-02 2002-07-16 Astropower, Inc. Silicon thin-film, integrated solar cell, module, and methods of manufacturing the same
US20050034754A1 (en) * 2001-09-21 2005-02-17 Christoph Schmidt Photovoltaic insulating glazing
US20080011289A1 (en) * 2006-07-14 2008-01-17 National Science And Technology Development Agency Photovoltaic thermal (PVT) collector
US20080017241A1 (en) * 2006-07-21 2008-01-24 Anderson Jerrel C Embossed high modulus encapsulant sheets for solar cells
EP1882130A1 (en) * 2005-05-13 2008-01-30 Whitfield Solar Ltd. Concentrating solar collector
US20080098672A1 (en) * 2006-10-25 2008-05-01 O'hagin Carolina Stollenwerk Form-fitting solar panel for roofs and roof vents
US20080185033A1 (en) * 2007-02-06 2008-08-07 Kalejs Juris P Solar electric module
US20080236655A1 (en) * 2007-03-29 2008-10-02 Baldwin Daniel F Solar module manufacturing processes
US20090032087A1 (en) * 2007-02-06 2009-02-05 Kalejs Juris P Manufacturing processes for light concentrating solar module
JP2009071340A (en) * 2009-01-07 2009-04-02 Sharp Corp Solar cell module
US20090178704A1 (en) * 2007-02-06 2009-07-16 Kalejs Juris P Solar electric module with redirection of incident light
US20090203308A1 (en) * 2006-04-18 2009-08-13 O'hagin Carolina Automatic roof ventilation system
US20090286463A1 (en) * 2008-05-13 2009-11-19 Daniels Gregory S Ember-resistant and flame-resistant roof ventilation system
DE102008044910A1 (en) * 2008-08-30 2010-03-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Solar cell and solar cell module with one-sided interconnection
US20100330898A1 (en) * 2008-02-26 2010-12-30 Daniels Gregory S Roof ventilation system
US20120176077A1 (en) * 2011-01-07 2012-07-12 Samsung Electro-Mechanics Co., Ltd. Solar cell module having white back sheet
US8236126B2 (en) 2010-07-14 2012-08-07 Industrial Technology Research Institute Encapsulation method of environmentally sensitive electronic element
WO2011095485A3 (en) * 2010-02-05 2012-08-16 Reinhausen Plasma Gmbh Solar cell string and method for producing same
US8782967B2 (en) 2010-09-27 2014-07-22 Gregory S. Daniels Above sheathing ventilation system
USD748239S1 (en) 2014-03-06 2016-01-26 Gregory S. Daniels Roof vent assembly
USD755944S1 (en) 2014-03-06 2016-05-10 Gregory S. Daniels Roof vent assembly
US9394693B2 (en) 2013-11-22 2016-07-19 Gregory S. Daniels Roof vent for supporting a solar panel
US10457148B2 (en) 2017-02-24 2019-10-29 Epic Battery Inc. Solar car
US10465930B2 (en) 2014-03-06 2019-11-05 Gregory S. Daniels Roof vent with an integrated fan
US10587221B2 (en) 2017-04-03 2020-03-10 Epic Battery Inc. Modular solar battery
USD891604S1 (en) 2015-11-19 2020-07-28 Gregory S. Daniels Roof vent assembly
USD930810S1 (en) 2015-11-19 2021-09-14 Gregory S. Daniels Roof vent
US11326793B2 (en) 2018-12-21 2022-05-10 Gregory S. Daniels Roof vent and roof ventilation system
USD963834S1 (en) 2020-10-27 2022-09-13 Gregory S. Daniels Roof vent with a circular integrated fan
USD964546S1 (en) 2020-10-27 2022-09-20 Gregory S. Daniels Roof vent with a circular integrated fan
US11489082B2 (en) 2019-07-30 2022-11-01 Epic Battery Inc. Durable solar panels

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Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173820A (en) * 1977-06-24 1979-11-13 Nasa Method for forming a solar array strip
US4334354A (en) * 1977-07-12 1982-06-15 Trw Inc. Method of fabricating a solar array
US4283590A (en) * 1977-07-21 1981-08-11 Werner H. Bloss Method for production of solar cells and solar cells produced thereby
US4234351A (en) * 1978-07-14 1980-11-18 The Boeing Company Process for fabricating glass-encapsulated solar cell arrays and the product produced thereby
US4241493A (en) * 1978-12-22 1980-12-30 Andrulitis William B Method of fabricating solar cell modules
EP0018924A3 (en) * 1979-05-08 1981-03-25 Saint-Gobain Vitrage Method of manufacturing solar-cell panels and panels obtained by this method
US4321418A (en) * 1979-05-08 1982-03-23 Saint Gobain Vitrage Process for manufacture of solar photocell panels and panels obtained thereby
EP0018924A2 (en) * 1979-05-08 1980-11-12 Saint Gobain Vitrage International Method of manufacturing solar-cell panels and panels obtained by this method
FR2479570A2 (en) * 1980-03-25 1981-10-02 Saint Gobain Encapsulating solar battery of photocells - by coating battery in resin powder placing between sheets and sintering the resin
FR2491680A1 (en) * 1980-10-06 1982-04-09 Exxon Research Engineering Co Prodn. of solar cell array - in which a transparent encapsulant is injected into a casing with transparent top
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